Home / 20,172.68-30,231.02-15,238.28

Finding the Fourth Proportional to 20,172.68, 30,231.02 and 15,238.28

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Solution

The fourth proportional to 20,172.68, 30,231.02 and 15,238.28 is: 22,836.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.68 : 30,231.02 = 15,238.28 : x
  2. Step 2: Convert to fraction form
    20,172.68/30,231.02 = 15,238.28/x
  3. Step 3: Cross multiply
    20,172.68x = 30,231.02 × 15,238.28
  4. Step 4: Simplify right side
    20,172.68x = 460,668,747.45
  5. Step 5: Solve for x
    x = 460,668,747.45/20,172.68
  6. Step 6: Final answer
    x = 22,836.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.